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X/EDITREM

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.

Tape/disk: Home » Personal collection » Acorn ADFS disks » Electron_User_Group » EUG_25.ADF
Filename: X/EDITREM
Read OK: ✔
File size: 1928 bytes
Load address: FFFF1900
Exec address: FFFF8023
File contents
   10REM mode 0 screen editor comments
   20REM Variables:
   30REM M$ current message,DOTX & DOTY current cursor position,STRTX & STRTY start cursor position before dragging
   40REM (BRX,BRY) & (TLX,TLY) are bottom right and top left x and y coordinates of the original box that was saved
   50REM A is internal counter and inkey and general pass parameters thingy. F is always used as the file#.
   60REM OVR is the isolated bit taken from the clipboard file as viewed in the order that it was saved and NOT the order it is being loaded in in.FLG is set 0 if the chosen bit (see OVR) wasn't set and vice versa 
   70REM PASS is a counting loop used in the MODE5 module and also when drawing a box (hence will always be a mutliple of 2) 
   80REM SCRN is used in the MODE5 module,and is initially set to &140 less that the bottom of the screen memory (as in the genric section that follows &140 is added back on) for the mode.LOC is the current byte in question,being poked
   90REM SVTLX is used in the two versions of the loadin routine (see MODE5 module and around line 700) to keep the original value saved while the actual value is incremented
  100REM TMPX and TMPY are used to provide compatibilty between routines - ie.to pass parameters and count things in loops 
  110REM CNSTY and CNSTX are used when dragging out a box and effectively set the step of the FOR...NEXT loop to enable the box the be dragged from any corner
  120REM HINDX and EINDX are used for when the appropriate whole selected bytes are to be saved.Home index is how many bits in from the MSB of the byte the cursor is at and End index is how many bits in from the MSB too
  130REM VDU23,0,10,12... is used to disable the cursor.If there are any suspicious +1's anywhere it is usually because natural numbers start and 1 but the co-ordinate system starts at 0,0
  140REM Filenames: 
  150REM EDIT is the startup and load in part ; EDITTMP is used internally as a temporary file when the move option is chosen and will be deleted ; EDITCRE the core program which is where almost all execution time is spent 
  160REM EDITENL contains the pixel by pixel editor ; EDITCLP is the clipboard file in the format (strtx,strty)(dotx,doty)(bytes... 
  170REM To avoid the can't extend error ensure the disk is *compacted.No it won't run accross the tube as it pokes memory addresses 
  180REM Errors:
  190REM within the core program only ; 'SIZE?' means that the selected area to zoom in on was greater than 30x40 ; 'WIDTH?' and 'DEPTH?' means that the selected area didn't enclose any pixels ; 'CANNOT' is given by the paste command if there is no 
  200REM clipboard file on the disk 
  210REM Blow by blow: 
  220REM EDIT>>> 
  230REM FX3,4 restores output to the screen when re-entering fron 'editenl' as it is turned off in that program to jab keys into the keyboard buffer ; FX4,1 makes the cursors ASCii ; HIMEM is dropped as the message area is stored here later
  240REM FX12,8 slows the keyboard repeat to prevent delays while the pixel-pointer catches up with the keyboard buffer
  250REM EDITCRE>>> 
  260REM Is made up of many gosubs each of which are used by the command table right at the beginning.In order of appearance they are
  270REM Keypresses are detected and if cursor keys then the pixel-pointer is move else check is it is one of the reserved words 
  280REM Save what was in the message area (eight letters each taking 8 bytes) just below screen memory then print the message using MOVE and VDU5 then restore those bytes
  290REM Highlight the cursor with a 2x2 box by starting (x-2,y-2) from the current cursor position the increasing the co-ordinates.If the point is off the screen then nothing is plotted to avoid half the box appearing on the other side of the screen 
  300REM mass calculation to locate any pixel on the screen using true (x,y) co-ordinates measured from top left (0,0) to bottom right (639,255)  
  310REM Expand a box by seeing which of the cursors was pressed and adding or subtracting from DOTn.CNSTX and CNSTY allow the box to be dragged starting at any corner,although on pressing chrs(135) they are sorted into size order so that STRTn is 
  320REM top left and DOTn is bottom right.If the box has no depth or width then the user will be alerted of this 
  330REM Move box by adding to BOTH STRTn and DOTn instead of just DOTn as above.On pressing chrs(135) it returns 
  340REM Save boxed area to nearest whole byte (the individual bits required from each end is calculated later) 
  350REM Loadin by getting a byte from the file,ANDing it with a mask,and then checking whether the chosen bit is set.Then get byte from screen memory,AND it with a negative mask to ensure the selected bit is set 0.Or the two together 
  360REM Clear the area temporarily renames the clipboard file,then creates its own by saving a load of VAL(M$),using M$ to save variable names.Load in that file,and restore the clipboard.255=white;0=black,170=(10101010) therefore grey 
  370REM Select black,grey,or white.No default,if the question is not answered it is asked again. 
  380REM Get co-ordinates of the area last selected in the clipboard file.If not exist then print 'CANNOT' in the message area 
  390REM One pass version of the draw a pulsing box.This is only used by the box drawer so that the box is permanently left on the screen
  400REM Enter text (delete and copy are disabled).Pressing RETURN puts it in columns.Ex-or's it so that if crossing a black/white boundary it appears 50:50 
  410REM Procedit drags a box,saves the area,saves the entire screen to $.OUTPUT,then chains the mode5 extention module 
  420REM EDITENL>>> 
  430REM Openin the file,to get co-ordinates,remove the cursor with VDU23,define variables and those with I want to save unaltered for later 
  440REM As with loadin above,except that is flag is set then a whole square is coloured in with a for...next poking 255 into the screen memory 
  450REM Print current pixel position,which can be increased up to the limit of the screen (29,39). 
  460REM If tab pressed then ex-or whatever was there with 255 but if pressed chrs(135) then stop the editor and save
  470REM Reverse of loadin except that if TLX~8 isn't zero then some blank bits must be saved in the byte before the 'pixels' (squares on the screen) can be evaluated otherwise the file would be ((HINDX+(8-EINDX))*Y too short
  480REM Print 'reloading' then emulate what '$.EDIT' does (loads in the screen,turn on the first pixel at TLHC) then insert 'P' into the keyb buffer and run '$.EDITCRE' which then jumps to 'paste' mode to insert the new version
  490REM R.Sprowson 3/9/95 


#� mode 0 screen editor comments
� Variables:
p� M$ current message,DOTX & DOTY current cursor position,STRTX & STRTY start cursor position before dragging
(p� (BRX,BRY) & (TLX,TLY) are bottom right and top left x and y coordinates of the original box that was saved
2h� A is internal counter and inkey and general pass parameters thingy. F is always used as the file#.
<�� OVR is the isolated bit taken from the clipboard file as viewed in the order that it was saved and � the order it is being loaded in in.FLG is set 0 if the chosen bit (see OVR) wasn't set and vice versa 
Fz� PASS is a counting loop used in the MODE5 module and also when drawing a box (hence will always be a mutliple of 2) 
P�� SCRN is used in the MODE5 module,and is initially set to &140 less that the bottom of the screen memory (as in the genric section that follows &140 is added back on) for the mode.LOC is the current byte in question,being poked
Z�� SVTLX is used in the two versions of the loadin routine (see MODE5 module and around line 700) to keep the original value saved while the actual value is incremented
dx� TMPX and TMPY are used to provide compatibilty between routines - ie.to pass parameters and count things in loops 
n�� CNSTY and CNSTX are used when dragging out a box and effectively set the step of the FOR...NEXT loop to enable the box the be dragged from any corner
x�� HINDX and EINDX are used for when the appropriate whole selected bytes are to be saved.Home index is how many bits in from the MSB of the byte the cursor is at and End index is how many bits in from the MSB too
��� �23,0,10,12... is used to disable the cursor.If there are any suspicious +1's anywhere it is usually because natural numbers start and 1 but the co-ordinate system starts at 0,0
�� Filenames: 
��� EDIT is the startup and load in part ; EDITTMP is used internally as a temporary file when the move option is chosen and will be deleted ; EDITCRE the core program which is where almost all execution time is spent 
��� EDITENL contains the pixel by pixel editor ; EDITCLP is the clipboard file in the format (strtx,strty)(dotx,doty)(bytes... 
��� To avoid the can't extend error ensure the disk is *compacted.No it won't run accross the tube as it pokes memory addresses 
�
� Errors:
��� within the core program only ; 'SIZE?' means that the selected area to zoom in on was greater than 30x40 ; 'WIDTH?' and 'DEPTH?' means that the selected area didn't enclose any pixels ; 'CANNOT' is given by the paste command if there is no 
�!� clipboard file on the disk 
�� Blow by blow: 
�� EDIT>>> 
��� FX3,4 restores output to the screen when re-entering fron 'editenl' as it is turned off in that program to jab keys into the keyboard buffer ; FX4,1 makes the cursors ASCii ; HIMEM is dropped as the message area is stored here later
�t� FX12,8 slows the keyboard repeat to prevent delays while the pixel-pointer catches up with the keyboard buffer
�� EDITCRE>>> 
�� Is made up of many gosubs each of which are used by the command table right at the beginning.In order of appearance they are
~� Keypresses are detected and if cursor keys then the pixel-pointer is move else check is it is one of the reserved words 
�� Save what was in the message area (eight letters each taking 8 bytes) just below screen memory then print the message using MOVE and VDU5 then restore those bytes
"�� Highlight the cursor with a 2x2 box by starting (x-2,y-2) from the current cursor position the increasing the co-ordinates.If the point is off the screen then nothing is plotted to avoid half the box appearing on the other side of the screen 
,�� mass calculation to locate any pixel on the screen using true (x,y) co-ordinates measured from top left (0,0) to bottom right (639,255)  
6�� Expand a box by seeing which of the cursors was pressed and adding or subtracting from DOTn.CNSTX and CNSTY allow the box to be dragged starting at any corner,although on pressing chrs(135) they are sorted into size order so that STRTn is 
@o� top left and DOTn is bottom right.If the box has no depth or width then the user will be alerted of this 
Jo� Move box by adding to BOTH STRTn and DOTn instead of just DOTn as above.On pressing chrs(135) it returns 
Tm� Save boxed area to nearest whole byte (the individual bits required from each end is calculated later) 
^�� Loadin by getting a byte from the file,ANDing it with a mask,and then checking whether the chosen bit is set.Then get byte from screen memory,AND it with a negative mask to ensure the selected bit is set 0.Or the two together 
h�� Clear the area temporarily renames the clipboard file,then creates its own by saving a load of VAL(M$),using M$ to save variable names.Load in that file,and restore the clipboard.255=white;0=black,170=(10101010) therefore grey 
r_� Select black,grey,or white.No default,if the question is not answered it is asked again. 
||� Get co-ordinates of the area last selected in the clipboard file.If not exist then print 'CANNOT' in the message area 
��� One pass version of the draw a pulsing box.This is only used by the box drawer so that the box is permanently left on the screen
��� Enter text (delete and copy are disabled).Pressing RETURN puts it in columns.Ex-or's it so that if crossing a black/white boundary it appears 50:50 
�u� Procedit drags a box,saves the area,saves the entire screen to $.OUTPUT,then chains the mode5 extention module 
�� EDITENL>>> 
��� Openin the file,to get co-ordinates,remove the cursor with VDU23,define variables and those with I want to save unaltered for later 
��� As with loadin above,except that is flag is set then a whole square is coloured in with a for...next poking 255 into the screen memory 
�a� Print current pixel position,which can be increased up to the limit of the screen (29,39). 
�r� If tab pressed then ex-or whatever was there with 255 but if pressed chrs(135) then stop the editor and save
��� Reverse of loadin except that if TLX~8 isn't zero then some blank bits must be saved in the byte before the 'pixels' (squares on the screen) can be evaluated otherwise the file would be ((HINDX+(8-EINDX))*Y too short
��� Print 'reloading' then emulate what '$.EDIT' does (loads in the screen,turn on the first pixel at TLHC) then insert 'P' into the keyb buffer and run '$.EDITCRE' which then jumps to 'paste' mode to insert the new version
�� R.Sprowson 3/9/95 
�
00000000  0d 00 0a 23 f4 20 6d 6f  64 65 20 30 20 73 63 72  |...#. mode 0 scr|
00000010  65 65 6e 20 65 64 69 74  6f 72 20 63 6f 6d 6d 65  |een editor comme|
00000020  6e 74 73 0d 00 14 10 f4  20 56 61 72 69 61 62 6c  |nts..... Variabl|
00000030  65 73 3a 0d 00 1e 70 f4  20 4d 24 20 63 75 72 72  |es:...p. M$ curr|
00000040  65 6e 74 20 6d 65 73 73  61 67 65 2c 44 4f 54 58  |ent message,DOTX|
00000050  20 26 20 44 4f 54 59 20  63 75 72 72 65 6e 74 20  | & DOTY current |
00000060  63 75 72 73 6f 72 20 70  6f 73 69 74 69 6f 6e 2c  |cursor position,|
00000070  53 54 52 54 58 20 26 20  53 54 52 54 59 20 73 74  |STRTX & STRTY st|
00000080  61 72 74 20 63 75 72 73  6f 72 20 70 6f 73 69 74  |art cursor posit|
00000090  69 6f 6e 20 62 65 66 6f  72 65 20 64 72 61 67 67  |ion before dragg|
000000a0  69 6e 67 0d 00 28 70 f4  20 28 42 52 58 2c 42 52  |ing..(p. (BRX,BR|
000000b0  59 29 20 26 20 28 54 4c  58 2c 54 4c 59 29 20 61  |Y) & (TLX,TLY) a|
000000c0  72 65 20 62 6f 74 74 6f  6d 20 72 69 67 68 74 20  |re bottom right |
000000d0  61 6e 64 20 74 6f 70 20  6c 65 66 74 20 78 20 61  |and top left x a|
000000e0  6e 64 20 79 20 63 6f 6f  72 64 69 6e 61 74 65 73  |nd y coordinates|
000000f0  20 6f 66 20 74 68 65 20  6f 72 69 67 69 6e 61 6c  | of the original|
00000100  20 62 6f 78 20 74 68 61  74 20 77 61 73 20 73 61  | box that was sa|
00000110  76 65 64 0d 00 32 68 f4  20 41 20 69 73 20 69 6e  |ved..2h. A is in|
00000120  74 65 72 6e 61 6c 20 63  6f 75 6e 74 65 72 20 61  |ternal counter a|
00000130  6e 64 20 69 6e 6b 65 79  20 61 6e 64 20 67 65 6e  |nd inkey and gen|
00000140  65 72 61 6c 20 70 61 73  73 20 70 61 72 61 6d 65  |eral pass parame|
00000150  74 65 72 73 20 74 68 69  6e 67 79 2e 20 46 20 69  |ters thingy. F i|
00000160  73 20 61 6c 77 61 79 73  20 75 73 65 64 20 61 73  |s always used as|
00000170  20 74 68 65 20 66 69 6c  65 23 2e 0d 00 3c d1 f4  | the file#...<..|
00000180  20 4f 56 52 20 69 73 20  74 68 65 20 69 73 6f 6c  | OVR is the isol|
00000190  61 74 65 64 20 62 69 74  20 74 61 6b 65 6e 20 66  |ated bit taken f|
000001a0  72 6f 6d 20 74 68 65 20  63 6c 69 70 62 6f 61 72  |rom the clipboar|
000001b0  64 20 66 69 6c 65 20 61  73 20 76 69 65 77 65 64  |d file as viewed|
000001c0  20 69 6e 20 74 68 65 20  6f 72 64 65 72 20 74 68  | in the order th|
000001d0  61 74 20 69 74 20 77 61  73 20 73 61 76 65 64 20  |at it was saved |
000001e0  61 6e 64 20 ac 20 74 68  65 20 6f 72 64 65 72 20  |and . the order |
000001f0  69 74 20 69 73 20 62 65  69 6e 67 20 6c 6f 61 64  |it is being load|
00000200  65 64 20 69 6e 20 69 6e  2e 46 4c 47 20 69 73 20  |ed in in.FLG is |
00000210  73 65 74 20 30 20 69 66  20 74 68 65 20 63 68 6f  |set 0 if the cho|
00000220  73 65 6e 20 62 69 74 20  28 73 65 65 20 4f 56 52  |sen bit (see OVR|
00000230  29 20 77 61 73 6e 27 74  20 73 65 74 20 61 6e 64  |) wasn't set and|
00000240  20 76 69 63 65 20 76 65  72 73 61 20 0d 00 46 7a  | vice versa ..Fz|
00000250  f4 20 50 41 53 53 20 69  73 20 61 20 63 6f 75 6e  |. PASS is a coun|
00000260  74 69 6e 67 20 6c 6f 6f  70 20 75 73 65 64 20 69  |ting loop used i|
00000270  6e 20 74 68 65 20 4d 4f  44 45 35 20 6d 6f 64 75  |n the MODE5 modu|
00000280  6c 65 20 61 6e 64 20 61  6c 73 6f 20 77 68 65 6e  |le and also when|
00000290  20 64 72 61 77 69 6e 67  20 61 20 62 6f 78 20 28  | drawing a box (|
000002a0  68 65 6e 63 65 20 77 69  6c 6c 20 61 6c 77 61 79  |hence will alway|
000002b0  73 20 62 65 20 61 20 6d  75 74 6c 69 70 6c 65 20  |s be a mutliple |
000002c0  6f 66 20 32 29 20 0d 00  50 e8 f4 20 53 43 52 4e  |of 2) ..P.. SCRN|
000002d0  20 69 73 20 75 73 65 64  20 69 6e 20 74 68 65 20  | is used in the |
000002e0  4d 4f 44 45 35 20 6d 6f  64 75 6c 65 2c 61 6e 64  |MODE5 module,and|
000002f0  20 69 73 20 69 6e 69 74  69 61 6c 6c 79 20 73 65  | is initially se|
00000300  74 20 74 6f 20 26 31 34  30 20 6c 65 73 73 20 74  |t to &140 less t|
00000310  68 61 74 20 74 68 65 20  62 6f 74 74 6f 6d 20 6f  |hat the bottom o|
00000320  66 20 74 68 65 20 73 63  72 65 65 6e 20 6d 65 6d  |f the screen mem|
00000330  6f 72 79 20 28 61 73 20  69 6e 20 74 68 65 20 67  |ory (as in the g|
00000340  65 6e 72 69 63 20 73 65  63 74 69 6f 6e 20 74 68  |enric section th|
00000350  61 74 20 66 6f 6c 6c 6f  77 73 20 26 31 34 30 20  |at follows &140 |
00000360  69 73 20 61 64 64 65 64  20 62 61 63 6b 20 6f 6e  |is added back on|
00000370  29 20 66 6f 72 20 74 68  65 20 6d 6f 64 65 2e 4c  |) for the mode.L|
00000380  4f 43 20 69 73 20 74 68  65 20 63 75 72 72 65 6e  |OC is the curren|
00000390  74 20 62 79 74 65 20 69  6e 20 71 75 65 73 74 69  |t byte in questi|
000003a0  6f 6e 2c 62 65 69 6e 67  20 70 6f 6b 65 64 0d 00  |on,being poked..|
000003b0  5a ab f4 20 53 56 54 4c  58 20 69 73 20 75 73 65  |Z.. SVTLX is use|
000003c0  64 20 69 6e 20 74 68 65  20 74 77 6f 20 76 65 72  |d in the two ver|
000003d0  73 69 6f 6e 73 20 6f 66  20 74 68 65 20 6c 6f 61  |sions of the loa|
000003e0  64 69 6e 20 72 6f 75 74  69 6e 65 20 28 73 65 65  |din routine (see|
000003f0  20 4d 4f 44 45 35 20 6d  6f 64 75 6c 65 20 61 6e  | MODE5 module an|
00000400  64 20 61 72 6f 75 6e 64  20 6c 69 6e 65 20 37 30  |d around line 70|
00000410  30 29 20 74 6f 20 6b 65  65 70 20 74 68 65 20 6f  |0) to keep the o|
00000420  72 69 67 69 6e 61 6c 20  76 61 6c 75 65 20 73 61  |riginal value sa|
00000430  76 65 64 20 77 68 69 6c  65 20 74 68 65 20 61 63  |ved while the ac|
00000440  74 75 61 6c 20 76 61 6c  75 65 20 69 73 20 69 6e  |tual value is in|
00000450  63 72 65 6d 65 6e 74 65  64 0d 00 64 78 f4 20 54  |cremented..dx. T|
00000460  4d 50 58 20 61 6e 64 20  54 4d 50 59 20 61 72 65  |MPX and TMPY are|
00000470  20 75 73 65 64 20 74 6f  20 70 72 6f 76 69 64 65  | used to provide|
00000480  20 63 6f 6d 70 61 74 69  62 69 6c 74 79 20 62 65  | compatibilty be|
00000490  74 77 65 65 6e 20 72 6f  75 74 69 6e 65 73 20 2d  |tween routines -|
000004a0  20 69 65 2e 74 6f 20 70  61 73 73 20 70 61 72 61  | ie.to pass para|
000004b0  6d 65 74 65 72 73 20 61  6e 64 20 63 6f 75 6e 74  |meters and count|
000004c0  20 74 68 69 6e 67 73 20  69 6e 20 6c 6f 6f 70 73  | things in loops|
000004d0  20 0d 00 6e 9b f4 20 43  4e 53 54 59 20 61 6e 64  | ..n.. CNSTY and|
000004e0  20 43 4e 53 54 58 20 61  72 65 20 75 73 65 64 20  | CNSTX are used |
000004f0  77 68 65 6e 20 64 72 61  67 67 69 6e 67 20 6f 75  |when dragging ou|
00000500  74 20 61 20 62 6f 78 20  61 6e 64 20 65 66 66 65  |t a box and effe|
00000510  63 74 69 76 65 6c 79 20  73 65 74 20 74 68 65 20  |ctively set the |
00000520  73 74 65 70 20 6f 66 20  74 68 65 20 46 4f 52 2e  |step of the FOR.|
00000530  2e 2e 4e 45 58 54 20 6c  6f 6f 70 20 74 6f 20 65  |..NEXT loop to e|
00000540  6e 61 62 6c 65 20 74 68  65 20 62 6f 78 20 74 68  |nable the box th|
00000550  65 20 62 65 20 64 72 61  67 67 65 64 20 66 72 6f  |e be dragged fro|
00000560  6d 20 61 6e 79 20 63 6f  72 6e 65 72 0d 00 78 d8  |m any corner..x.|
00000570  f4 20 48 49 4e 44 58 20  61 6e 64 20 45 49 4e 44  |. HINDX and EIND|
00000580  58 20 61 72 65 20 75 73  65 64 20 66 6f 72 20 77  |X are used for w|
00000590  68 65 6e 20 74 68 65 20  61 70 70 72 6f 70 72 69  |hen the appropri|
000005a0  61 74 65 20 77 68 6f 6c  65 20 73 65 6c 65 63 74  |ate whole select|
000005b0  65 64 20 62 79 74 65 73  20 61 72 65 20 74 6f 20  |ed bytes are to |
000005c0  62 65 20 73 61 76 65 64  2e 48 6f 6d 65 20 69 6e  |be saved.Home in|
000005d0  64 65 78 20 69 73 20 68  6f 77 20 6d 61 6e 79 20  |dex is how many |
000005e0  62 69 74 73 20 69 6e 20  66 72 6f 6d 20 74 68 65  |bits in from the|
000005f0  20 4d 53 42 20 6f 66 20  74 68 65 20 62 79 74 65  | MSB of the byte|
00000600  20 74 68 65 20 63 75 72  73 6f 72 20 69 73 20 61  | the cursor is a|
00000610  74 20 61 6e 64 20 45 6e  64 20 69 6e 64 65 78 20  |t and End index |
00000620  69 73 20 68 6f 77 20 6d  61 6e 79 20 62 69 74 73  |is how many bits|
00000630  20 69 6e 20 66 72 6f 6d  20 74 68 65 20 4d 53 42  | in from the MSB|
00000640  20 74 6f 6f 0d 00 82 b7  f4 20 ef 32 33 2c 30 2c  | too..... .23,0,|
00000650  31 30 2c 31 32 2e 2e 2e  20 69 73 20 75 73 65 64  |10,12... is used|
00000660  20 74 6f 20 64 69 73 61  62 6c 65 20 74 68 65 20  | to disable the |
00000670  63 75 72 73 6f 72 2e 49  66 20 74 68 65 72 65 20  |cursor.If there |
00000680  61 72 65 20 61 6e 79 20  73 75 73 70 69 63 69 6f  |are any suspicio|
00000690  75 73 20 2b 31 27 73 20  61 6e 79 77 68 65 72 65  |us +1's anywhere|
000006a0  20 69 74 20 69 73 20 75  73 75 61 6c 6c 79 20 62  | it is usually b|
000006b0  65 63 61 75 73 65 20 6e  61 74 75 72 61 6c 20 6e  |ecause natural n|
000006c0  75 6d 62 65 72 73 20 73  74 61 72 74 20 61 6e 64  |umbers start and|
000006d0  20 31 20 62 75 74 20 74  68 65 20 63 6f 2d 6f 72  | 1 but the co-or|
000006e0  64 69 6e 61 74 65 20 73  79 73 74 65 6d 20 73 74  |dinate system st|
000006f0  61 72 74 73 20 61 74 20  30 2c 30 0d 00 8c 11 f4  |arts at 0,0.....|
00000700  20 46 69 6c 65 6e 61 6d  65 73 3a 20 0d 00 96 dc  | Filenames: ....|
00000710  f4 20 45 44 49 54 20 69  73 20 74 68 65 20 73 74  |. EDIT is the st|
00000720  61 72 74 75 70 20 61 6e  64 20 6c 6f 61 64 20 69  |artup and load i|
00000730  6e 20 70 61 72 74 20 3b  20 45 44 49 54 54 4d 50  |n part ; EDITTMP|
00000740  20 69 73 20 75 73 65 64  20 69 6e 74 65 72 6e 61  | is used interna|
00000750  6c 6c 79 20 61 73 20 61  20 74 65 6d 70 6f 72 61  |lly as a tempora|
00000760  72 79 20 66 69 6c 65 20  77 68 65 6e 20 74 68 65  |ry file when the|
00000770  20 6d 6f 76 65 20 6f 70  74 69 6f 6e 20 69 73 20  | move option is |
00000780  63 68 6f 73 65 6e 20 61  6e 64 20 77 69 6c 6c 20  |chosen and will |
00000790  62 65 20 64 65 6c 65 74  65 64 20 3b 20 45 44 49  |be deleted ; EDI|
000007a0  54 43 52 45 20 74 68 65  20 63 6f 72 65 20 70 72  |TCRE the core pr|
000007b0  6f 67 72 61 6d 20 77 68  69 63 68 20 69 73 20 77  |ogram which is w|
000007c0  68 65 72 65 20 61 6c 6d  6f 73 74 20 61 6c 6c 20  |here almost all |
000007d0  65 78 65 63 75 74 69 6f  6e 20 74 69 6d 65 20 69  |execution time i|
000007e0  73 20 73 70 65 6e 74 20  0d 00 a0 81 f4 20 45 44  |s spent ..... ED|
000007f0  49 54 45 4e 4c 20 63 6f  6e 74 61 69 6e 73 20 74  |ITENL contains t|
00000800  68 65 20 70 69 78 65 6c  20 62 79 20 70 69 78 65  |he pixel by pixe|
00000810  6c 20 65 64 69 74 6f 72  20 3b 20 45 44 49 54 43  |l editor ; EDITC|
00000820  4c 50 20 69 73 20 74 68  65 20 63 6c 69 70 62 6f  |LP is the clipbo|
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00001740  65 64 69 74 6f 72 20 61  6e 64 20 73 61 76 65 0d  |editor and save.|
00001750  01 d6 de f4 20 52 65 76  65 72 73 65 20 6f 66 20  |.... Reverse of |
00001760  6c 6f 61 64 69 6e 20 65  78 63 65 70 74 20 74 68  |loadin except th|
00001770  61 74 20 69 66 20 54 4c  58 7e 38 20 69 73 6e 27  |at if TLX~8 isn'|
00001780  74 20 7a 65 72 6f 20 74  68 65 6e 20 73 6f 6d 65  |t zero then some|
00001790  20 62 6c 61 6e 6b 20 62  69 74 73 20 6d 75 73 74  | blank bits must|
000017a0  20 62 65 20 73 61 76 65  64 20 69 6e 20 74 68 65  | be saved in the|
000017b0  20 62 79 74 65 20 62 65  66 6f 72 65 20 74 68 65  | byte before the|
000017c0  20 27 70 69 78 65 6c 73  27 20 28 73 71 75 61 72  | 'pixels' (squar|
000017d0  65 73 20 6f 6e 20 74 68  65 20 73 63 72 65 65 6e  |es on the screen|
000017e0  29 20 63 61 6e 20 62 65  20 65 76 61 6c 75 61 74  |) can be evaluat|
000017f0  65 64 20 6f 74 68 65 72  77 69 73 65 20 74 68 65  |ed otherwise the|
00001800  20 66 69 6c 65 20 77 6f  75 6c 64 20 62 65 20 28  | file would be (|
00001810  28 48 49 4e 44 58 2b 28  38 2d 45 49 4e 44 58 29  |(HINDX+(8-EINDX)|
00001820  29 2a 59 20 74 6f 6f 20  73 68 6f 72 74 0d 01 e0  |)*Y too short...|
00001830  e1 f4 20 50 72 69 6e 74  20 27 72 65 6c 6f 61 64  |.. Print 'reload|
00001840  69 6e 67 27 20 74 68 65  6e 20 65 6d 75 6c 61 74  |ing' then emulat|
00001850  65 20 77 68 61 74 20 27  24 2e 45 44 49 54 27 20  |e what '$.EDIT' |
00001860  64 6f 65 73 20 28 6c 6f  61 64 73 20 69 6e 20 74  |does (loads in t|
00001870  68 65 20 73 63 72 65 65  6e 2c 74 75 72 6e 20 6f  |he screen,turn o|
00001880  6e 20 74 68 65 20 66 69  72 73 74 20 70 69 78 65  |n the first pixe|
00001890  6c 20 61 74 20 54 4c 48  43 29 20 74 68 65 6e 20  |l at TLHC) then |
000018a0  69 6e 73 65 72 74 20 27  50 27 20 69 6e 74 6f 20  |insert 'P' into |
000018b0  74 68 65 20 6b 65 79 62  20 62 75 66 66 65 72 20  |the keyb buffer |
000018c0  61 6e 64 20 72 75 6e 20  27 24 2e 45 44 49 54 43  |and run '$.EDITC|
000018d0  52 45 27 20 77 68 69 63  68 20 74 68 65 6e 20 6a  |RE' which then j|
000018e0  75 6d 70 73 20 74 6f 20  27 70 61 73 74 65 27 20  |umps to 'paste' |
000018f0  6d 6f 64 65 20 74 6f 20  69 6e 73 65 72 74 20 74  |mode to insert t|
00001900  68 65 20 6e 65 77 20 76  65 72 73 69 6f 6e 0d 01  |he new version..|
00001910  ea 18 f4 20 52 2e 53 70  72 6f 77 73 6f 6e 20 33  |... R.Sprowson 3|
00001920  2f 39 2f 39 35 20 0d ff                           |/9/95 ..|
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